Automatic carriage-return for type-writers, line-spacers, and reverse tabulators.



T. F CRAWL EY. E

V AUTOMATIC CARRIAGE REIURN FOR TYPE'WRIITERS, LINE SPACEBS,AND REVERSETABULATORS.

APPLICATION men 061216. 1915 r 1,251,867. Patented Jan. 1,1918. 2snnma-anm I.

r T. F. CRAWLEY.

AUTOMATIC CARRIAGE RETURN FOR TYFEWR HERS, LINE SPACERS, AND REVERSETABULATORS.

' APPLICATION nu'iu ocT. I6. 1915.

1,251,867. v Patented Jan. 1,1918.

2 BHEET8BHEET 2.

provide a device of the character t1oned in which, when the carnage of aUNITED STATES PATENT THOMAS F. CRAWLEY, OI NEWTON, MISSISSIPPI.

'IABULATORS.

Specification of Letters Patent.

Patented Jan. 1, 1918.

Application filed October 16, 1915. Serial No. 56,278.

if?) cllwhom it may concern.

Be it known that I, THOMAS a citizen of the United IJ'ewton, in thecounty of F. CRAWLEY, States, residing at Newton and State 'of'Mississip'pi, have invented certain new and useful Improvements inAutomatic Carriag'e-Returns for Type-Vriters, Line-Spacers, andReverse-Tabulators, of which the following is a specification.

My invention relates to typewriters and more particularly to an improvedautomatic carriage return.

The primary object of my invention is to above mentypewriter hasreachedthe end of its travel or the completion of a line, it willautomatically return to its original position, ready to start anotherline.

Another object of my invention is to, provide a carriage returninmechanism which automatically spaces tl e paper carrying ri'illersimultaneously with the return of the carriagel Afulther object of theinvention is to pro- ,vid "'mproved circuit closing means-for use Dconnection with a device of the character ic'iflmy. invention.

Astill further object of my invention is to provide a new and improvedclutch mem her for association with the preferred embodiment of myinvention.

With the above and other objects in view {my invention residespreferably in the con v ruction', combination; and arrangement of ts ashereinafter set forth in the specifiones illustrated in the accompanying"drawings,- in which- Figure li a front elevational view of apwritershowing my improvements assotherewith,

. ,4 ig. a rear elevational view of the .sam ,J:-.- r Figd vis adiagrammatic v1 arrange ent,

' Figzis a longitudinal sectional view of an. improved clutch-which Iuse in connecew of a circuit tion'j' with my improved typewritercarriage" return; and .1

. ectric motor shdwing the manner of parts of the invention herelnafterxtviiflpin reference characters designate to the line spacing leverarmature 14 is is a detail end elevational view of similar partsthroughout the various views of the drawin s.

In the drawings, I have illustrated a type wr ter having theusual baseframe 1 on which the carriage 2 is laterally movable. My nvention is soarranged as to permit its appl1cat1on to .any of the resent typewriters.The invention embodles broadly an electric motor, circuit closincarriage, means for maintainln the circuits 111 closed positionthroughout t e return of the carriage and means for automaticallyopening the circuits at the end of the return of said carriage. Animproved auto matically acting one-way clutch is provided for a purposewhich will hereinafter appear, the detail structure of this clutch beinghereinafter described.

More specifically, an electric motor 3, thereof being elongated as shownto advantage in-Fig. 4 to carry a winding sheave or drum or the likehaving my improved clutch associated therewith. The clutch is designatedas a whole in Fig. 1 by the reference numeral 5. The electric motor 3 isconnected to the carriage through the medium of a belt, twine'or thelike 6, said belt having one extremity wound about the clutch 5 and theother extremity connected 7 of the typewriter. The belt 6 is trainedover the guide pulley 8 mounted on a bracket 9 carried by a base frame 1of the typewriter.

In order to energize the motor to cause a. return of the carriageautomatically I have provided a source of electrical energy such as abattery '10, conductors 11 and 12 leading 'therefrom,-one of saidconductors having the el-ectro-magnet 13 interposed therein and theother conductor being electrically connected with an armature 14 adaptedtothe invention embodies be influenced by the electro-magnet when thelatter is energized. ()ne extremity of the rigidly mounted on aninsulator 15,'the free extremity of said armature being bent upwardlyand provided with a ball contact 16. v The motor 3 is embraced in thebranch circuit including the conductors 17 and 18, the conductor 18having a circuit closer 19 interposed therein, said air-- cuit closerbeing carried by the armature 14. A sec nd circuit closer 20 is carriedby the armature 14 and is adapted to contact wlth the armature shaft 4-means on the 'manually operable circuit the terminal 21 of abranch'conductor 22 connected to the conductor 23 thence leading to theresilient arm 24 carried by the Carriage of the typewriter. A secondbranch conductor 25 is connected to the main conductor 11 and terminatesin the stationary terminal 26 dis osed in the path of movement of theresllient arm 24: so as to be engaged thereby to close the circuit tothe electro-magnet 13. It will be seen from an inspection of Fig. 3 thatthe circuit closer 19 is adapted to engage the circuit terminal 27. Amanually operable circuit closer 28 is shunted across the circuit closer19 and the circuit closer 27 for a purpose which will hereinafterappear, said terminal 28 being termed hereinafter the spacing key. Acloser 29 is shunted across the conductors 23 and 25 to permit themanual closing ofthe circuit of the electro-magnetin case of emergency.From the above, it will be seen that a main circuit is provided, havin apair of branch circuits extending there rom, one of said branch circuitsembracing the electric motor 3 and the other of said branch circuitsserving to maintain the motor circuit closed for a predeterminedinterval.

' As shown to advantage in Fig. 2, the resilient arm 24: is adjust-ablycarried by the carriage 2 so as to adjust the length of travel of thecarriage.

In order to automatically open the circuits when the carriage has beenreturned, I provide a circuit opener comprising a lug or but-ton 30slidably adjustable on a; rod 31 s'upported'on the carriage 2.

In order to facilitate 'a release of the carriage for use after the samehas been returned to itsstarting position, I have provided an improvedclutch comprising a winding drum 32 elongated as at 33 and provided witha concentrically arranged relatively large opening 34. The drum 32 isthreaded for engagement with the extension 35 of the armature shaft 4,of the' electric motor 3, or said drum maybe mounted separate fromthemotor extension.

and carried thereby. The extension 35 is automatically engageable anddisen 'a 'eable with and-from said drum, the threa ed. portion beingdesignated 36. A flanged collar 37 may be earned. by the extension 35and freely rotatable thereon, an adju'gtable collaifl 38 carried on theextension I limitthe -lon itudinal movement of said drum.-Suitabeanti-friction bearin means 39 ma be interposedbetween the co lars238* and 37; Acap 40' is mounted for" free rotation on the extension 85,said cap being maintained in the desired position thereon b means ofanadjustable collar 41, Suitable anti-friction bearing means 42' may beinterposed between the cap 40 and the collar 41. .A suitable coil springelement 431s mtcrserving to.

i6 pivotally mounted on the motor frame having engagement with saidratchet wheel to permit rotation in but one direction. A suitable guard47 is arranged on the motor frame and is secured thereto as at 48 theupper end of the same being adapted to be engaged over the pulley 8 andthe drum 32 in order to prevent dislodgement of the belt 6. I

In operation, the typewriter is used in theusual manner, the carriagetraveling across the machine step by step until the spring terminal 2+en ages the stationary terminal 26. This wil close the main cir cuit inwhich the electro-magnet 13 is interposed energizing said magnet andcausing the armature 1a to be actuated. This operation automaticallycloses two circuits, viz., the motor circuit and the main circuit thelatter being permanently closed by the a v ove mentioned operation. Thecurrent flows atthis time through a conductor 12 to the? electro'magnetl3 thence through the conductor 22 passing fromthe terminal 21 to thearmature It at the point-'20 and thence through the conductor ll back tothe source of energy 10. The motor circuit includes the conductorcircuit 17 connected to the conductor 12, the conductor 18 from theterminal 27 through to the circuit closer 19' 30 carried by the carriage2 serves to auto-- .matically open the circuits hereinbefore' referredto when the carriage is brought to the position at which said circuitopener is caused to'engage the knob l'ficarried. by the armature .115the circuits at-the points 19 and 20.. will automaticallygopen both themotor-"cirs, v

suit and the ma1n"- control circuit and the.

14 causing the latterto be raised brea. f

ill)

carriage is ready for further movement;

through its path of travel. Should it be de sired to move the carriageindependently of.

the automatic control, his merely necessaryto close the circuit closer29, for an instant,

which will cause the carriage to return. In

order to operate the spacing leverindependently of the carriage,--Iii-have provided the spacing key 28 hereinbefore referred to. Byintermittently closing said spacing key,

short quick pull .ma be directed on the belt 6 causing the lever to beactuated.

' ing, owl to'the movement of the carriage, the said um will be causedtotravel longitudinally along the extension 35 against the tension ofthe spring 43. It is to be under-' Several circuits hereinbefore descr1-;When the carriage reaches the end of its travel and is released, it isnecessary that some-means be rovided. to permit the free rotationof therum 32. The threads 36 to which said drum is'engaged, are formed on anextension in a direction opposite to thedirection of rotation of saiddrum when winding. Thus, when the drum is unwindstood that. the spring43serves to normally tend. ,to force said drum into engagement with 'thethreads 36 so thatwhen the sh ft of e ed the drum wil'l be caused towind the cord thereon. Of course it will be understood that .the numberof. threads may be varied as desired .depen on the relation of t e sizeof drum an the carriage. y I

From theabove description taken in conrotated by the automatic closinnection with the accompanying drawings, it is thought that a clear andcomprehensive understanding of the constructiomoperation. and advantagesof my invention may be readily 'gathered and while I have shownanddescribed the same as embodying-a spestructure, I reserve the rightto. make qtor mounted onsaid typewriter and having connection with saidcarriage, said motor,

changes therein which do not depart from the11s'pirit and scope ofaimed.

i What I claim is: p

Y 1. A' -carriage return for typewriters; ineluding, in combination with,a typewriter having the usual carriageyan electric 1110- the inventionas being embraced in a branch circuit communicating with -a maincircuit, means on "the typewriter carriage for automatically closingsaidmain circuit, and means embraced in said main circuit formaintaining the same closed and for closing said motor circuit.

2. A carriage return for typewritersuineluding, in combination with atypewriter w fhaving the usual carriage, an electrlc motor mounted onsaid typewriter and having connection with said carriage, a motorembraced in a branch circuit communicating with a mai'n circuit, meanson the typewriter carriage for automaticall circuit, means embrace insaid mam c1rcu1t for maintaining thesame closed and for the length oftravel bf main circuit having an electro-magnet emclosing said mainclosing said motor circuit,'and means carried by the carriage forautomatically opening said circuit closer" when the carnage is re-.turned to the starting position. 1

3. A carriageretu'rn for typewriters, includmg, 1n combination with atypewriter having the usual carriage thereon, a main circuit, said maincircuit embracing an electromagnet and circuit closer, a branch circultembracmg'an electrlc motor and having electric connection with said maincircuit,

a circuit closer for said branch circuit adapted for actuation by saidelectro-magnet, whereby to close said main circuit and said branchcircuit when said main circuit is initially closed.

4. A carriagereturn for typewriters, in

cluding, in combination with a typewriter having the usual carriagethereon, an electric motor on {said typewriter having connectlon withsald carriage, a motor circuit embracing said motor and a'circuitcloser, a

braced therein, and a circuit closer carried by the carriage, saidelectro-magnet being" adapted to actuate said circuit closer in themotor circuit to maintain said motor circuit closed until the carriagehas been returned to the starting position.

5. A'carriage-return for typewriters, including an electric motor, acircuit therefor,

a main circuit electrically 'connected with said motor circuit, anelectro-magnet interposed in said motor circuit, a circuit closeradapted tobe actuated by said electro-magnet, adjustable means'carriedby the carriage toclose said main circuit, said circuit closer servingto maintain said main circuit and said motor circuit closed throughoutthe return travel of said carriage.

6. A carriage return for typewriters including an electric motor, thearmature shaft of said motor being extended and threaded, retainingcollars carried on the shaft, 9.

windingdrum adapted at times to freely move on said shaft, means forcausing said drum to automatically engage and rotate with said shaft,and a flexible element adapted to be wound about said drum and connectedto the typewriter carriage, as and for the purpose set forth.

In testimony. whereof I afiix my signature in presence of two witnesses.I THOMAS F. CRAWLEY. I

Witnesses: H. C. WILsON, 1

- W. W. WVATTs.

